A Compact UWB Band-Pass Filter with Ultra-Narrow Tri-Notch-Band Characteristic
A Compact UWB Band-Pass Filter with Ultra-Narrow Tri-Notch-Band Characteristic
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发表时间：
2014
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通讯作者：
Y. Li;W. Li;C. Liu;Q. Ye
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作者：
Y. Li;W. Li;C. Liu;Q. Ye
本文提出了一种设计紧凑型超宽带（UWB）带通滤波器的新方法，该滤波器具有良好的三陷波带特性，该滤波器是通过使用环存管多模谐振器（MMR）获得的。利用奇/偶激励谐振条件得到滤波器的等效模型。利用IE3D对所设计的滤波器的特性进行了研究和分析。该滤波器已成功设计、分析、制造和测量。实验和数值结果表明，所提出的滤波器尺寸为25×10 mm，阻抗带宽范围为3 GHz至10.6 GHz，三陷波频带为4.14 GHz、6.1 GHz和7.1 GHz。所提出的滤波器可以合并到UWB无线电系统中，以有效地增强对不需要的信号的干扰免疫力。索引术语 多模谐振器、陷波带、射频识别 (RFID) 通信、环形管和 UWB 滤波器。
This paper proposes a novel approach for designing compact ultra-wideband (UWB) band-pass filter with a good tri-notch-band characteristic, which is obtained by using the ringstub multimode resonator (MMR). The equivalent model of the filter is achieved by using odd/even excitation resonance condition. The characteristics of the designed filter are investigated and analyzed by means of IE3D. This filter is designed, analyzed, fabricated, and measured successfully. Experimental and numerical results show that the proposed filter, with compact size of 25×10 mm, has an impedance bandwidth range from 3 GHz to 10.6 GHz with the triple notch bands at 4.14 GHz, 6.1 GHz, and 7.1 GHz. The proposed filter can be incorporated into UWB radio systems in order to efficiently enhance the interference immunity from undesired signals. Index Terms Multimode resonator, notch band, RF identification (RFID) communication, ringstub, and UWB filter.